The Professional version, which is discontinued, has a body which can be disassembled - carefully. There's a flap of rubber that is the check valve. Might be fixed with a swab of grease, and might not. I was able to get the thing apart and put back together (the hose split where it joins the body, and the only way to fix it is to disassemble the whole thing). Not a great design, IMHO. Starting with the fact that the hose is connected so that you can't replace it easily.

But if you are good with your hands, you should be able to get it apart and back together. Careful with the gage needle. Good luck.